For me anything that you do that takes your body beyond what it can already comfortably do can be resistance training. But that’s the hard part. To do that we have to push ourselves. We have to be willing to try things that we aren’t sure that we can do. So not only is there physical resistance, we also have to overcome the mental resistance to being uncomfortable.

Once we can do that we can do anything.

But why? Why should we care about this kind of exercise?